SIGNL4 is a mobile alerting platform built by Derdack that bridges the gap between automated systems and the people who need to react. It delivers critical alerts via push notifications, SMS, and voice calls. But it’s more than just a notification cannon. SIGNL4 adds on-call scheduling, automatic escalation, acknowledgment tracking, and team collaboration right out of the box. If an alert isn’t acknowledged within a defined time window, it automatically escalates to the next person on duty and a lot more features.
For industrial environments, this is a game changer. Imagine a Peakboard application monitoring production KPIs, machine states, or sensor data on the shop floor. The moment a critical threshold is crossed — a temperature spike, a conveyor belt stop, or an OEE drop below target — Peakboard can fire off an alert directly to SIGNL4. Within seconds, the right technician gets a push notification on their phone, complete with all the context they need: which machine, what happened, and how bad it is.
The integration itself is surprisingly simple. SIGNL4 exposes a clean REST API (essentially a webhook) that accepts JSON payloads. Since Peakboard supports HTTP calls through Lua scripting and Building Blocks, connecting the two is just a matter of crafting a POST request with the right data.
In this article, we’ll walk through the complete setup: creating a SIGNL4 team, getting the webhook URL, and putting together the Building Blocks in Peakboard. As a nice extension we will even create a notificaition with an cam image attached.